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一、概述汽车用四冲程柴油机的增压,最初是试用罗茨型增压器,第二次世界大战后不久,主要在英国和美国实际上采用了这种增压器。此后西德又发展了小型径流废气涡轮增压器,直到现在,世界各国地用的增压器差不多都是这种形式。采用这种增压方式,能使发动机最高转速时的最大功率比较容易地增长40～50%,可是,由于汽车用发动机的使用转速范围极广泛,所以若要求其低速时的扭矩增长情况也和高速时一样,那么最大功率的增长率通常可约达30%。废气涡轮增压方式与机械驱动增压器相
I. Overview The boosting of a four-stroke diesel engine for automobiles was initially piloted as a Roots-type supercharger. Shortly after the Second World War, this supercharger was used mainly in the United Kingdom and the United States. Since then, West Germany has developed a small run-off turbocharger, until now, turbochargers used in almost all countries in the world are in this form. With this supercharging method, the maximum power of the engine can be relatively easily increased by 40% to 50% at maximum maximum speed. However, due to the extremely wide range of rotational speeds of engines for automobiles, if the torque increase at low speed is required, At high speeds, the maximum power growth rate is usually about 30%. Exhaust gas turbocharger and mechanical drive supercharger phase